public class Main{
    public static void main(String[] args) throws InterruptedException {
        for (float y=1.5f;y>-1.5f;y-=0.15f){
            for (float x=-1.5f;x<1.5f;x+=0.05){
                float a = x*x+y*y-1;
                if ((a*a*a-x*x*y*y*y)<=0.0){
                    System.err.print("*");
                }else {
                    System.err.print(" ");
                }
            }
            System.err.println();
            Thread.sleep(100);
        }
    }
}